"""Interface for all Dingo radio propagation models.

Copyright (C) Sarah Mount, 2008.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
"""
from __future__ import absolute_import
del absolute_import

from ..modelManager import Model

class RadioPropagationModel(Model):
    """Superclass for all radio propagation models."""
    def __init__(self):
        self.modeltype = 'Radio'
        return
    def getRSSI(self, distance):
        """Return predicted RSSI for packet travelling a given C{distance}.

	@precondition: distance > 0
	@type distance: float
        @param distance: distance packet has travelled
        @rtype: float
        """
        return 0.0
        
